Multiple choice

Iron free compound of haemoglobin is

  1. haemotoxin

  2. bilirubin

  3. haematin

  4. globin
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Haemoglobin consists of two components: heme (iron-containing porphyrin) and globin (protein). When iron is removed from haemoglobin, the remaining protein portion is called globin. This is distinct from bilirubin (a breakdown product) or haematin (an oxidized, iron-containing form).

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